Advertisements
Advertisements
Question
If number of electrons in an atom is 8 and number of protons is also 8, then
- What is the atomic number of the atom? and
- What is the charge on the atom?
Advertisements
Solution
i. Number of electrons in an atom = Number of protons
The number of electrons in an atom = 8
Charge of an atom = Number of protons − Number of electrons
= 8 − 8
= 0
ii. The number of protons is equal to the number of electrons. So, the atom will be neutral.
APPEARS IN
RELATED QUESTIONS
What is variable valency? Name two elements having variable valency and state their valencies.
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
Fill in the Blank of the Following Statement :
An atom has atomic mass number 23 and atomic number 11. The atom has .................... electrons.
If an atom ‘A’ has atomic number 19 and mass number 39, state –
- Its electronic configuration.
- The number of valence electrons it possesses.
Name the 3 sub-atomic particles of an atom.
Give short answer:
what is the atomic mass number? mention its formula.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
Electrons revolve around the nucleus in definite open shells.
State the term for the following:
The amount of substance which contains the same number of units as the number of atoms in carbon-12.
